AnswersTX-Environmental Systems-BCASUnit Test

Unit Test — Unit test Answers

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How does mining affect local populations?

A
Mining is a vital part of the economy of surrounding towns.
B
Mining introduces pollution into local water supplies.
C
Mining disrupts local populations of flora and fauna.
D
All of the above are true.
42
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Surface mining is more ecologically damaging than subsurface mining.

A
T
B
F
43

Which of the following would most likely employ a forester?

A
state governments
B
lumber businesses
C
national governments
D
all of the above
44

Reclamation restores an environment affected by mining to a state where it can sustain its ecosystem.

A
T
B
F
45

What are the two types of minerals?

A
industrial and environmental
B
valuable and invaluable
C
metallic and nonmetallic
D
important and unimportant
46

Which of the following is the most damaging method of soil remediation?

A
soil excavation and disposal
B
soil aeration
C
heating and vapor extraction
D
microbial digestion
47

Which of the following statements about pesticides is true?

A
Pesticides provide plants with essential nutrients.
B
Pesticides prevent the destruction of crops.
C
Pesticides are never harmful to plants.
D
Pesticides are never harmful to animals.
48

How do urban communities compare to rural communities?

A
Rural communities produce more pollution than urban communities.
B
Urban communities tend to have a higher population than rural communities.
C
More people in the United States live in rural communities than in urban communities.
D
Urban communities have less environmental impact than rural communities.
49

Which of the following best explains why soil conservation is important to human agriculture?

A
Erosion prevention prevents millions of dollars in damage from mudslides.
B
It is easier to prevent the degradation of old soil than it is to generate new soil.
C
If the soil salinity gets too high crops will not be able to grow in it.
D
Soil contamination is a hazard to human and animal health.
50

Closing mines has no economic impact on communities.

A
T
B
F
51

The high productivity of American agriculture is exemplified by _______.

A
low crop yields per farm worker
B
high crop yields per farm worker
C
the small cultivated area per inhabitant
D
the small cultivated area per farmer
52

Insects are responsible for the destruction of a significant percentage of potential food harvests every year.

A
T
B
F
53

Which of the following would be more likely to utilize capitalism-based land management methods?

A
city planners
B
federal regulators
C
corporate directors
D
all of the above
54

The same agricultural practices are used in every country of the world.

A
T
B
F
55

What distinguishes even-aged management practices from uneven-aged management practices?

A
Even-aged practices remove larger groups of trees than uneven-aged management practices.
B
Even-aged practices are similar to minor natural disturbances while uneven-aged practices are similar to major natural disturbances.
C
Even-aged practices leave areas with greater variance than uneven-aged practices.
D
All of the above
56

Which of the following is not a negative consequence of upward urban growth?

A
pollution
B
creation of a “heat island”
C
increased use of surrounding land
D
waste management issues
57

Developed countries typically have _______.

A
a larger rural population
B
a larger urban population
C
less access to goods and services
D
little access to industrial jobs

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